Remove unnecessary return statement for single liners

Summary: Ditto

Reviewed By: Andrey-Mishanin

Differential Revision: D27008683

fbshipit-source-id: af21c267d1117c01e8a1bda94907923d31ca0b55

Author: cuva

CKSwift/State.swift

@@ -45,6 +45,6 @@ public struct State<Value> : TreeNodeLinkable {
 
 extension State : Equatable where Value : Equatable {
   static public func ==(lhs: State, rhs: State) -> Bool {
-    return lhs.wrappedValue == rhs.wrappedValue
+    lhs.wrappedValue == rhs.wrappedValue
   }
 }

CKSwift/ViewModel.swift

@@ -46,6 +46,6 @@ public struct ViewModel<Value: AnyObject> : TreeNodeLinkable {
 
 extension ViewModel : Equatable {
   static public func ==(lhs: ViewModel, rhs: ViewModel) -> Bool {
-    return lhs.wrappedValue === rhs.wrappedValue
+    lhs.wrappedValue === rhs.wrappedValue
   }
 }